Despite all the teasing and personal style - does make a valid point. If you plan with a calculated maximum budget with little buffer, there is a high probability of situations with sleeplessness.
By the way, Werder also didn't have a season full of fun and, with some luck, got into the relegation against HSV - and HSV has still managed to stay in the league through the relegation! Your example is not bad in that regard. Do you want to experience a season like Werder's 2019/20 during the construction?